Drier.



E. C. HORST.

DRIER.

APPLICATION FILED FEB-6.19m.

1 ,29 1 ,891 Patented Jan. 21, 1919.

nun. cmnns nonsr, or sax FRANCISCO, cemr'omwm.

DRIER.

flpecifl oation of Letters Patent. I Patented J an, 21, 1919 Application filed February 6, 1918. Serial No. 215,578.

mary object thereof is toprovide a drier which has means for enabling control of the drying media so as to selectively efi'ect flow thereof in various directions through the drier, and to also provide means for uniformly spreading the air throughout the area of the drier prior to the air encountering the trays or other supports for the material being dried.

Further, the invention aims to providea cushioned body of air supply which is formed within the casing by deflecting the air in a direction opposite to that in which it enters the drier prior to the air being permitted to flow through the casing.

In the drawings Figure 1 is a vertical sectional view of the invention showin a structure adapted for vertical flow of t e air, and

Fig. 2, is a similar view showing the structure to provide horizontal flow of the air.

In proceeding in accordance with the mvention a casin or cabinet 1 is employed in which the usua trays 2 for the material to be dried'are mounted. The supports for the material to be dried may be of an type within the art asfat present practise since such supports do not enter mto the lnvention.

A suitably driven fan 3 has a pipe 4 leadg therefrom and the latter has branches 5 and 6 the ends 7 and 8 of which discharge.

adjacent the opposed walls 9 and 10 of the cabinet. A swing or flap valve 11 is located within the T-fitting 12 and enables 'lective control of the air so as to cause the" atter to discharge the air against the concaves21 flow through either one of the branches 5' and 6 to the exclusion of the other;

Air outlets 13 and 14 are formed in the ends of the cabinet at the top thereof and are controlled by suitable hinged flaps or valves 15 and 16, while similar hinged flaps or valves 17 and 18 control similar air outlets 19 and 20 formed in the cabinet ends at the bottom thereof.

The ends 7 and 8 of theair pipes 5 and 6 "dlfi'erences bein and 22 located in confronting relation to sald ends 7 and 8, space being provided between the concaves and the top and bottom Walls 9 and 10 of the cabinet so as to form and confine a cushioned body of air prior to the latter rising and contacting with the material to .be drled.

The action of the concaves or dished deflecting 1ates21 and 22 is to spread the air and to eflect same in a direction opposite to that in which the air is introduced into the cabinet thus causing a cushioned body of air to be continuously maintained and from which the air is constantly forced and moved vertically to finally pass through either the upper or lower air outlets. It will be understood that when air is caused to enter the bottom of the casin the flaps 17 and 18 at said bottom are cased and the upper flaps 15 and 16 are opened to allow the air to egress through the upper outlets 13 and 14. Similarly when the air is caused to enter the top of the casing, the flaps 15 and 16 at said to are closed, while the flaps 17 and 18 at the bottom are opened to allow the air to egress through the outlets 19 and 20 as shown in Fig. 1. In this way the air can be controlled so as to first enter the bottom and egress through the top of the cabinet and then caused to enter the top and egress through the bottom effecting complete drying of the material by bringing the air first into contact with the bottom and then in contact with the top sides of the material.

InFig. 2, the same principle is involved, the structure being the same as in Fig. .1, excepting that the air is forced horizontally or transversely through the casing instead of vertically. The parts in Fig. 2.are indicated by the same reference characters with the exception that the latter are primed, the

essentially that the concaves are vertica y arranged instead of horizontally and the discharge ends 7 and 8 of the air feed pi es are similarly disposed.

Obviously,'t e horizontal and vertical 'air feeding can be embodied in a single structure.

What is claimed is 1. In a drier, a cabinet having an air inlet in each of two opposite walls and air outlets at opplosite ends of each of said opposite walls t ereof, a concave in the cabinet adjacent each of said opposite walls and having the concavity thereof confronting the air outlets at the respective Walls in spaced relation thereto, a source of supply, means to conduct air from the source of supply and to discharge same to the concavities of the concave through said air inlets and means to selectively control the air to cause same to discharge through either inlet to the exclusion of the other. I

2. In a drier, a cabinet having a pair of air outlets atthe ends respectively of each of two'opposed walls, means to control each of said outlets, aninwardly facing concave fixed to each of the walls at points substantially central between theair outlets thereof, means to selectively supply air to either of the concaves, and means to maintain the controlling means of either of the walls closed when air is being suppliedito the concave of that wall.

3. In a drier, a cabinet having a pair of ends respectively of each of two opposed walls, means to control each of said outlets, air s reading means fixed to each of the walls etween the air outlets thereof, means to selectively supply air to either of the concaves, and means to maintain the controlling means of either of the walls closed when air is being supplied to the air spreading means of that walL 4:. In a drier, a cabinet, concaves fixed to respective opposite walls of the cabinet, air outlets on opposite sides of each of said concaves, controlling means for each air outlet,

walls, air spreading means a the cabinet so as tamper 5. In a drier, a cabinet having substana concave afiixed to to. project therebetially flat opposite walls, each of said walls so as pressure to each i yond and inwardly into the cabinet, an air outlet for each of said walls, means to control the air outlets, and means to supply air under pressure to the concaves.

6. In a drier, a cabinet having opposed fiixed to each wall and projecting beyond the wall and into to enable the walls to confine the air to form an air cushion, means to supply air to the air spreading means, and controlled outlets for the air adjacent each of said walls.

7 In a drier, a cabinet, air spreading means aifixed to one of the walls of the cabinet so as to project therebeyond and into the cabinet so as to enable said wall to confine the air to form an air cushion, means to supply air to the air spreading means, and a controlled outlet.

In testimony whereof I afifix my signature in the presence of two witnemes. Ell/[IL CLEMENS HORST.

Witnessw:

Korea A. Runes, Hanson M, Bnoone. 

